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/***************************************************************************
kjequalizer.cpp - links noatun VEqualizer and KJofol
--------------------------------------
Maintainer: Stefan Gehn <sgehn@gmx.net>
***************************************************************************/
#include "kjequalizer.h"
#include "kjequalizer.moc"
#include <qpainter.h>
#include <qtimer.h>
#include <kdebug.h>
#include <kpixmap.h>
#include <noatun/vequalizer.h>
KJEqualizer::KJEqualizer(const QStringList &l, KJLoader *p)
: QObject(0), KJWidget(p), mBack(0), mView(0), mInterpEq(0)
{
int x=l[1].toInt();
int y=l[2].toInt();
int xs=l[3].toInt()-x;
int ys=l[4].toInt()-y;
setRect(x,y,xs,ys);
mBars = p->pixmap(parser()["equalizerbmp"][3]);
mBands = l[6].toInt();
mXSpace = l[7].toInt();
// background under equalizer
// needed to only blit onto screen ONCE and not for every band
QPixmap tmp = p->pixmap(p->item("backgroundimage")[1]);
mBack = new KPixmap ( QSize(xs,ys) );
bitBlt( mBack, 0, 0, &tmp, x, y, xs, ys, Qt::CopyROP );
// buffer for view
mView = new QPixmap ( xs, ys );
mBandWidth=parser()["EqualizerBmp"][1].toInt();
mBandHalfHeight=parser()["EqualizerBmp"][2].toInt();
kdDebug(66666) << "[KJEqualizer] mBands=" << mBands << ", mXSpace=" << mXSpace << ", mBandWidth=" << mBandWidth << ", mBandHalfHeight=" << mBandHalfHeight << "." << endl;
kdDebug(66666) << "[KJEqualizer] creating VInterpolation for " << mBands << " bands..." << endl;
mInterpEq = new VInterpolation(mBands);
// napp->vequalizer()->setBands(mBands); // FIXME: hack because spline sucks :P
connect(napp->vequalizer(), SIGNAL(changed()), this, SLOT(slotUpdateBuffer()));
slotUpdateBuffer(); // fill mView pixmap with valid data
}
KJEqualizer::~KJEqualizer(void)
{
delete mInterpEq;
delete mView;
delete mBack;
}
int KJEqualizer::barNum(const QPoint &pos) const
{
int x = pos.x();
x = x / mXSpace;
return mInterpEq->bands() * x / mBands;
}
int KJEqualizer::level(const QPoint &pos) const
{
int y = ((-pos.y()) + mBandHalfHeight+1) * (200/mBandHalfHeight);
return y;
}
void KJEqualizer::paint(QPainter *p, const QRect &)
{
QPixmap temp(rect().width(), rect().height());
// draw background into buffer
bitBlt ( &temp, 0, 0, mBack, 0, 0, -1, -1, Qt::CopyROP );
// draw band sliders into buffer
bitBlt( &temp, 0, 0, mView, 0, 0, rect().width(), rect().height(), Qt::CopyROP);
// and draw it on screen
bitBlt(p->device(), rect().topLeft(), &temp, QRect(0,0,-1,-1), Qt::CopyROP);
}
void KJEqualizer::slotUpdateBuffer()
{
// kdDebug(66666) << "[KJEqualizer] slotUpdateBuffer() called." << endl;
QBitmap regionMask( rect().width(), rect().height(), true); // fully transparent mask
QPainter mask( ®ionMask );
QPoint destX = QPoint(0, 0);
for (int band=0; band<mBands; band++)
{
int level = mInterpEq->level(band);
if (level>200) level=200;
if (level<-200) level=-200;
int picNum = ((int)(level+200)*(mBandHalfHeight-1) / 400) + 1;
int xPos = (picNum * mBandWidth) - mBandWidth;
// kdDebug(66666) << "[KJEqualizer] band=" << band << ", level=" << level << ", picNum=" << picNum << " @ xpos=" << xPos << "." << endl;
bitBlt(mView, destX, &mBars, QRect(xPos,0,mBandWidth,rect().height()), Qt::CopyROP);
// make slider opaque in mask so you see something on screen
mask.fillRect ( destX.x(), 0, mBandWidth, rect().height(), Qt::color1 );
destX += QPoint(mXSpace,0);
} // for()
// whole thingy has been drawn, now set the mask
mView->setMask( regionMask );
repaint();
}
void KJEqualizer::mouseMove(const QPoint &p, bool in)
{
if (!in) return;
mousePress(p);
}
bool KJEqualizer::mousePress(const QPoint &p)
{
kdDebug(66666) << "[KJEqualizer] setting band " << mBands << "/" << barNum(p)+1 << " to level " << level(p) << endl;
VBand b = mInterpEq->band( barNum(p) );
b.setLevel( level(p) );
// mouseMove(p, true);
return true;
}
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